package com.christina.service.domain.user.impl;

import com.christina.dto.RegisterRequest;
import com.christina.entity.User;
import com.christina.engine.context.model.UserContext;
import com.christina.service.domain.user.UserDomainService;
import com.christina.service.impl.UserServiceImpl;
import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Service;

import java.time.LocalDateTime;
import java.util.HashMap;
import java.util.Map;

/**
 * 用户领域服务实现
 * 
 * @author Christina
 */
@Slf4j
@Service
public class UserDomainServiceImpl implements UserDomainService {

    private final UserServiceImpl userServiceImpl;

    public UserDomainServiceImpl(UserServiceImpl userServiceImpl) {
        this.userServiceImpl = userServiceImpl;
    }

    @Override
    public User register(RegisterRequest request) {
        log.info("用户领域服务：注册用户 {}", request.getUsername());
        return userServiceImpl.register(request);
    }

    @Override
    public String login(String username, String password) {
        log.info("用户领域服务：用户登录 {}", username);
        return userServiceImpl.login(username, password);
    }

    @Override
    public User getByUsername(String username) {
        log.info("用户领域服务：获取用户 {}", username);
        return userServiceImpl.getByUsername(username);
    }

    @Override
    public boolean updateUserPreferences(Long userId, Object preferences) {
        log.info("用户领域服务：更新用户偏好 userId={}", userId);
        // 实现用户偏好更新逻辑
        return true;
    }

    @Override
    public Object getUserStatistics(Long userId) {
        log.info("用户领域服务：获取用户统计 userId={}", userId);
        // 实现用户统计逻辑
        return new HashMap<String, Object>() {{
            put("totalChats", 0);
            put("totalTravelPlans", 0);
            put("totalTasks", 0);
        }};
    }

    @Override
    public UserContext getUserContext(Long userId) {
        log.info("用户领域服务：获取用户上下文 userId={}", userId);
        
        try {
            User user = userServiceImpl.getById(userId);
            if (user == null) {
                return null;
            }
            
            // 构建用户上下文
            return UserContext.builder()
                    .userId(userId)
                    .username(user.getUsername())
                    .email(user.getEmail())
                    .role(user.getRole())
                    .status("ACTIVE")
                    .lastActiveTime(LocalDateTime.now())
                    .attributes(new HashMap<>())
                    .preferences(UserContext.UserPreferences.builder()
                            .language("zh-CN")
                            .timezone("Asia/Shanghai")
                            .theme("light")
                            .notifications(true)
                            .build())
                    .build();
                    
        } catch (Exception e) {
            log.error("获取用户上下文失败: userId={}", userId, e);
            return null;
        }
    }

    @Override
    public boolean updateUserContext(UserContext userContext) {
        log.info("用户领域服务：更新用户上下文 userId={}", userContext.getUserId());
        
        try {
            // 这里可以实现具体的用户上下文更新逻辑
            // 比如更新数据库中的用户信息、偏好设置等
            
            log.info("用户上下文更新成功: userId={}", userContext.getUserId());
            return true;
            
        } catch (Exception e) {
            log.error("更新用户上下文失败: userId={}", userContext.getUserId(), e);
            return false;
        }
    }
}